BEP Mini Battery Selector Switch [701S]Mini Battery Selector Switch The 701S is the most compact selector switch available on the market. While BEP recommends isolated battery systems as outlined with our distribution clusters, the 701S provides a simple economical way of separating two batteries. BEP Marine Battery Switch Test Procedures (UL 1107) Continuous (1 hour), intermittent (5 minutes) and Cranking (engine starting 10 seconds). The test is to determine the maximum current the